Ground every answer in facts on this page and the original listing. We never invent Glassdoor-style reviews or salaries that are not in our data.
Expect deep dives on HV stress, insulation coordination, grounding, transient behavior, and test plans. Prepare examples of experimental rigor, root-cause work, and cross-discipline tradeoffs under aggressive hardware timelines.
Strong fit if you like hands-on R&D on extreme electrical systems in a fast-moving fusion startup environment at Devens—not a pure desk or pure software role.
As R&D Engineer – High Voltage at a fusion hardware company, days likely mix HV insulation/power design, lab tests on pulsed or magnet-related systems, failure analysis, and tight collaboration with mechanical, cryogenics, and controls teams to push prototypes toward plant-scale reliability.
No mapped cert family or costed resources were provided. Prioritize high-voltage design practice, dielectric materials, power electronics, test instrumentation, and rigorous lab safety—backed by fusion/energy hardware project evidence.
No—the listing is on-site in Devens, MA (remote flag 0).
Commercial fusion power, with recent funding and plant/partner news tied to accelerating that path.
No. Only HN hiring/discussion links and company news—no review scores.
R&D Engineer - High Voltage at Cfsenergy in Devens, MA | Full Time | No Remote Position Summary CFS Energy is seeking a R&D Engineer to contribute to the development and testing of high voltage systems for superconducting magnets. This role involves designing and executing test campaigns focused on the Paschen effect, ensuring protection schemes are effective against high and poor vacuum conditions. The successful candidate will work closely with various engineering disciplines to resolve issues in SPARC/ARC magnet production and tokamak integration. Responsibilities Design and test high voltage systems for superconducting magnets, considering the Paschen effect and other environmental factors. Develop and lead test campaigns aimed at resolving issues with SPARC/ARC magnets in production and during tokamak integration. Collaborate across multidisciplinary teams to execute tests and projects on aggressive schedules. What You Bring Fundamental understanding of mechanical, electrical, materials, fluids, and software engineering principles. Experience in designing and testing high voltage systems for superconducting magnets. Able to work effectively across disciplines and groups under tight deadlines. Strong analytical skills with the ability to lead RCA efforts. More About Cfsenergy Commonwealth Fusion Systems is dedicated to delivering urgent transition to fusion energy. With a mission to design and build commercially viable fusion power plants, we are working closely with policymakers and suppliers to shape the future of the energy industry. Since 2018, we have raised nearly $3 billion in capital, positioning us as the leading private fusion company globally. Apply Today If you’re passionate about innovation and dedicated to solving complex engineering challenges, join our team! To apply, complete your application directly on this page, or you'll be redirected to the employer's application platform to finish submitting there.
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